Yes — you can redeem a Nintendo code on your phone using a web browser. Open Safari, Chrome, or any browser on your phone, go to ec.nintendo.com/redeem, sign into your Nintendo Account, enter your 16-character code, click Next, confirm your password and click Redeem. The content will be added to your Nintendo Account and will be ready to download next time you open the eShop on your Nintendo Switch. Important: the Nintendo Switch Online mobile app does NOT support code redemption — this is a common mistake. The app is only for voice chat, NSO features, and managing your membership. You must use a web browser on your phone, not the app.
